CN202479487U - Improved burner device of continuous casting tundish baking machine - Google Patents
Improved burner device of continuous casting tundish baking machine Download PDFInfo
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- CN202479487U CN202479487U CN 201220007808 CN201220007808U CN202479487U CN 202479487 U CN202479487 U CN 202479487U CN 201220007808 CN201220007808 CN 201220007808 CN 201220007808 U CN201220007808 U CN 201220007808U CN 202479487 U CN202479487 U CN 202479487U
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- continuous casting
- tundish
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- baking
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Abstract
An improved burner device of a continuous casting tundish baking machine belongs to the technical field of metallurgical equipment. The improved burner device of the continuous casting tundish baking machine is used to improve combusting rate of gas, increase baking temperatures of a continuous casting tundish, shorten baking time of the continuous casting tundish, and lower energy consumption. The burner is in a structure of multiple layers of circular seam casing tubes, the multiple layers of the circular seam casing tubes surround central casing tubes, and the central casing tubes and the circular seam casing tubes are respectively connected with gas pipelines and air pipelines at intervals. Air distribution disks are further disposed outside the circular seam casing tubes, and the air distribution disks are in parallel connection with air ducts in each layer and connected with the air pipelines. By adopting the improved burner device of the continuous casting tundish baking machine, tundish baking effect is improved obviously, the temperature of the tundish wall after baking can increase 100-150 DEG C, and the temperature of molten steel is reduced obviously from 59-65 DEC C to 53-57 DEG C. In the tundish baking process, the gas can be combusted completely, an on-site gas warning device does not send alarm, flames basically do not spill on a tundish cover, and the energy consumption is notably lowered.
Description
Technical field
The utility model relates to a kind of continuous casting tundish Ladle-casting apparatus burner arrangement, belongs to technical field of metallurgical equipment.
Background technology
General continuous casting tundish Ladle-casting apparatus burner is a single layer of rings slotted liner version, and promptly overlapping tube hub is coal gas, supply in the sleeve pipe circumferential weld air, coal gas go out behind the burner with outer circumferential weld in air mixed combustion, reach the purpose of baking tundish.In use mainly there is following problem in this type burner: 1. baking early stage cool because of involucrum, be prone to take off fire; 2. because of causing the scene not to the utmost, gas-fired causes remaining coal gas diffusion early stage in baking; 3. not only gas-fired is insufficient and the flare post is short partially, burning is unable for this type burner, and flame is beaten less than wrapping at the end, makes bag end baking temperature be lower than the bag wall temperature, often opens and waters production accidents such as knot stream; 4. because gas-fired is insufficient,, do not reach the middle bag baking temperature of technological requirement though middle bag stoving time is long; 5. because gas-fired is insufficient, not only wasted the coal gas resource, and walked " low-carbon environment-friendly " with present proposition and produce route and be not inconsistent.
The utility model content
The utility model technical problem to be solved is: provides a kind of and can improve gas-fired rate, raising flame combustion length and dynamics, thus the modified continuous casting tundish Ladle-casting apparatus burner arrangement of raising continuous casting tundish baking temperature and uniformity, shortening tundish stoving time, energy savings consumption.
The technical scheme that solves the problems of the technologies described above is:
A kind of improved continuous casting tundish Ladle-casting apparatus burner arrangement, its burner is a multilayer circumferential weld sleeve structure, and multilayer circumferential weld sleeve ring is around center sleeve, and center sleeve is connected with gas piping, air duct respectively with multilayer circumferential weld sleeve pipe at interval.
Above-mentioned improved continuous casting tundish Ladle-casting apparatus burner arrangement; Said circumferential weld sleeve structure form burner is that four layers, center sleeve are connected with gas piping with the shellring slotted liner; Be gas passage, the second layer is connected with air duct with outermost one deck circumferential weld sleeve pipe, is air duct.
Above-mentioned improved continuous casting tundish Ladle-casting apparatus burner arrangement, said circumferential weld sleeve pipe also have air-distributing disc outward, and air-distributing disc and each layer of air passage are in parallel, and air-distributing disc is connected with air duct.
The beneficial effect of the utility model is:
After adopting the utility model, under constant situation of roasting bag time, bag bag wall temperature can improve 100 ~ 150 ℃ in the baking back; The molten steel temperature drop amplitude is reduced to 53 ~ 57 ℃ of scopes by 59 ~ 65 ℃; Baking is omnidistance, and coal gas can fully burn basically, on-the-spot coal gas monitoring device do not report to the police (24ppm); Basically there is not flare to overflow on the tundish clad, significantly energy savings consumption.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the side view of Fig. 1.
Mark is following among the figure: gas passage 1, air duct 2, gas piping 3, air duct 4, air-distributing disc 5.
The specific embodiment
Show among the figure; The utility model changes the pattern of single layer of rings slotted liner burner in the past; Designed four layers of circumferential weld sleeve structure form burner, be that center sleeve and shellring slotted liner are gas passage, 1 second layer and outermost one deck circumferential weld sleeve pipe are air duct 2, and the circumferential weld sleeve pipe also has air-distributing disc 5 outward.For guaranteeing that each layer of air passage air distribution is even, pressure is identical, when therefore designing air-distributing disc 5, adopt each layer of air passage the mode of parallel connection directly to be connected with blast main 4.
The diameter dimension of each layer circumferential weld sleeve pipe calculates to confirm according to the active constituent content of the used coal gas of applying unit.
Consider the abundant burning of coal gas, the proportioning of coal gas and air need meet: 2CO+O
2=2CO
2, the CO content of coal gas is about 60% in the steel mill, O in the air
2Content be about 20%, through calculating, promptly the coal gas of 1 volume needs the air of 1.50 volumes.In this ratio; The diameter that designs each layer sleeve pipe is Φ 25mm, Φ 80mm, Φ 120mm, Φ 150mm outward by interior; Be air duct and the ratio 1.59 of gas passage sectional area, promptly the air duct sectional area guarantees the abundant burning of coal gas approximately greater than the gas passage sectional area.
Below be to use the effect of the embodiment of the utility model:
Embodiment 1: large square bland continuous-casting machine; Produced steel grade 40Mn2 on August 3rd, 2011; The multilayer circumferential weld coal gas burner of southern side tundish Ladle-casting apparatus for changing, north side tundish Ladle-casting apparatus is the mixed gas burner, middle bag baking situation and opening is watered in the back contrast of Baogang's coolant-temperature gage like following table:
See from top statistics, under the situation of roasting bag time basic identical (about 6h), use the roasting bag of multilayer circumferential weld coal gas burner effect obviously to be better than and use former mixed gas burner:
Bag bag wall temperature can improve 100 ~ 150 ℃ in the roasting bag of the multilayer circumferential weld coal gas burner back.
Big Baogang water is to the tundish molten steel temperature drop, and the molten steel temperature drop that uses former mixed gas burner is at 59 ~ 65 ℃, and the molten steel temperature drop that uses multilayer circumferential weld coal gas burner is at 53 ~ 57 ℃.
In addition, roasting packet procedures is observed gas burner, and former mixed gas burner is when little fire, moderate heat, and gas-fired is insufficient, and (on-the-spot gas alarm device is often reported to the police, and alarming value is 40 ~ 150PPm), and flare overflows more above the tundish clad; And in the multilayer circumferential weld coal gas burner baking tundish process, coal gas can both fully burn (on-the-spot gas alarm device is not reported to the police), does not have flare to overflow on the tundish clad basically.
Embodiment 2: large square bland continuous-casting machine, produced steel grade 40Mn2H-S on August 6th, 2011, and the tundish Ladle-casting apparatus is a multilayer circumferential weld coal gas burner, middle bag baking situation and opening is watered back molten steel temperature in tundish contrast like following table:
See that from top statistics the roasting bag time, the middle bag temperature behind the roasting bag of multilayer circumferential weld coal gas burner was at 1185 ~ 1205 ℃ under the situation of 4h, big Baogang water to the tundish molten steel temperature drop at 53 ~ 57 ℃.Through above data declaration, the Ladle-casting apparatus that uses multilayer circumferential weld coal gas burner is under the stoving time that guarantees 4h, and the cured effect of tundish also can reach the ordinary production requirement.
Claims (3)
1. improved continuous casting tundish Ladle-casting apparatus burner arrangement; It is characterized in that: its burner is a multilayer circumferential weld sleeve structure; Multilayer circumferential weld sleeve ring is around center sleeve, and center sleeve is connected with gas piping (3), air duct (4) respectively with multilayer circumferential weld sleeve pipe at interval.
2. improved continuous casting tundish Ladle-casting apparatus burner arrangement according to claim 1; It is characterized in that: said circumferential weld sleeve structure form burner is that four layers, center sleeve are connected with gas piping (3) with the shellring slotted liner; Be gas passage (1); The second layer is connected with air duct (4) with outermost one deck circumferential weld sleeve pipe, is air duct (2).
3. improved continuous casting tundish Ladle-casting apparatus burner arrangement according to claim 2 is characterized in that: said circumferential weld sleeve pipe also has air-distributing disc (5) outward, and air-distributing disc (5) is in parallel with each layer of air passage, and air-distributing disc is connected with air duct (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220007808 CN202479487U (en) | 2012-01-10 | 2012-01-10 | Improved burner device of continuous casting tundish baking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220007808 CN202479487U (en) | 2012-01-10 | 2012-01-10 | Improved burner device of continuous casting tundish baking machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202479487U true CN202479487U (en) | 2012-10-10 |
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ID=46953948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220007808 Expired - Fee Related CN202479487U (en) | 2012-01-10 | 2012-01-10 | Improved burner device of continuous casting tundish baking machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN202479487U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438455A (en) * | 2013-09-06 | 2013-12-11 | 洛阳沃达机械技术开发有限公司 | Blower-free combustor |
| CN104630415A (en) * | 2015-02-05 | 2015-05-20 | 邯郸新兴特种管材有限公司 | Fixed alloy gas baking device |
| CN106552914A (en) * | 2015-09-24 | 2017-04-05 | 宝山钢铁股份有限公司 | A kind of manufacture method of the continuous casting process and continuous casting thick plate of slab |
| CN108061301A (en) * | 2018-01-23 | 2018-05-22 | 上海云汇环保科技有限公司 | A kind of novel steel ladle baking burner |
-
2012
- 2012-01-10 CN CN 201220007808 patent/CN202479487U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438455A (en) * | 2013-09-06 | 2013-12-11 | 洛阳沃达机械技术开发有限公司 | Blower-free combustor |
| CN104630415A (en) * | 2015-02-05 | 2015-05-20 | 邯郸新兴特种管材有限公司 | Fixed alloy gas baking device |
| CN106552914A (en) * | 2015-09-24 | 2017-04-05 | 宝山钢铁股份有限公司 | A kind of manufacture method of the continuous casting process and continuous casting thick plate of slab |
| CN106552914B (en) * | 2015-09-24 | 2018-10-02 | 宝山钢铁股份有限公司 | A kind of continuous casting process of slab and the manufacturing method of continuous casting thick plate |
| CN108061301A (en) * | 2018-01-23 | 2018-05-22 | 上海云汇环保科技有限公司 | A kind of novel steel ladle baking burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20160110 |